Arrangement for forced lubrication for locomotives and similar vehicles



F. LJUNGSTROM. ARRANGEMENT FOR FORCED LUBRICATION FOR LOCOMOTIVES AND SIMILAR VEHICLES.

APPLICATION FILED FEB. 2, 1920. I 19%9948; m ma Feb. 15, 1921.

2 SHEETSSHEET l- F. LJUNGSTROM.

- ARRANGEMENT FOR FORCED LUBRI CATION FOR LOCOMOTIVESFAND SIMILAR VEHICLES.

APPLICATION FILED FEB. 2, 1920.

1,368,948. I Patented Feb. 15, 1921.

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EEEDEIK LJUNGSTROM, or BEEVIK, LInINGoN, SWEDEN, ASSIGNOR T0 AKTIEBOLA- GET LJuNes'rEoMs ANGTUEBIN, 0E STOCKHOLM, swEDEN, A. CORPORATION.

ARRANGEMENT FOR FORCED LUBR ICATION FOR LOCOMOTIVES AND SIMILAR VEHICLES.

Specification of Letters Patent. Patented F b. 15 1921 Application filed February 2, 1920. Serial No. 355,639.

To all whom it may concern:

Be it known that I, F REDRIK LJUNGs'rRoM, chief engineer, subject of the King of Sweden, residing at Brevik, Lidingon, Sweden, have invented certain new and useful Improvements in Arrangement for Forced Lubrication for Locomotives and Similar Vehicles of which the following is a specification. r

troughs. These troughs communicate with casings surrounding the machine parts.

Further, the invention consists in the collecting troughs being connected with two suction pumps mounted apart from each other, which pumps convey the oil to recep tacles situated higher up. Preferably, these suction pumps are arranged on the same shaft as the force pumps used to pump the oil from the oil receptacle to the places of lubrication.

The suction pumps preferablyare dimensioned so that they each take more than half the quantity of oil.

The invention, moreover, consists in part of the oil in the casing oroil receptacle surrounding the connecting rods being thrown against the walls of the casing in such manner that the casing will serve as an oil cooler; and, furthermore, the invention as applied to an oil box attached to the frame of the vehicle consists in the packing around the wheel or crank shaft being effected by screens of sheet metal or the like attached to the shaft or the bearings thereof, and sliding in contact with the side of the oil box.

The accompanying drawings illustrate by way of example a few embodiments of the invention as applied to an engine car with power transmission effected by means of connecting or coupling rods.

Figures 1 and 2 show one embodiment in elevation and in end View respectively, Fig.

1 being a section taken on line A-A in Fig. 2, and Fig. 2 a section taken on line B- -B in Fig. 1. Fig. 3 is a part of Fig.2 drawn to a larger scale, and Fig. 1 is anv enlarged vlew of an embodiment of the packing between the casing and the shaft. Fig. 5 is a longitudinal section of an embodiment of the arrangement disclosed in Fig. 1, and Fig. 6 shows a detail of Fig. 5 drawn to a larger scale.

In Figs. 1 and 2, 1 denotes the casing or oil box surrounding the crank, the connecting rods and the coupling rods 8, the said casing being attached to the frame 2. In this embodiment, the casing 1 is so united with the frame that the latter forms the inner side of the oil box. Arranged at the bottom of the oil box are the collecting troughs 4i.

Owing to the resiliency of the vehicle, there will be movements, in operation, of the shaft relatively to the frame 2 and the oil box 1, which necessitates the application of a packing around the said shaft.

The oil, which in operation is thrown against the walls of the casing or oil box 1, flows down the walls to the collecting troughs, whereby it is being cooled.

Fig. 3 shows an embodiment of such a packing as applied to an arrangement according to Figs. 1 and 2. Attached to the wheel shaft 8 or preferably to the bearings 6 thereof is a sliding screen 7 bearing against the side of the box 1, that is to say against the frame 2. The screen slides in steady contact with the frame through the resiliency thereof and forms a tight packing at all positions of the shaft 8 with respect to the box 1. In the present case, the box 1 is provided with a narrow part 5 holding the collecting troughs at the bottom thereof.

Fig. 1 shows a further embodiment of the above-mentioned packing and another way of attaching the oil box 1 to the frame. Inthis case, the oil box 1 is attached with its inner side 9 t0 the frame 2. The disk 7 situated on the bearing 6 now also bears against the side of the box 1, this, however, being effected in the present case through the medium of an additional disk or ring 10 fastened to the oil box 1, which disk or ring provides for two contact surfaces,

whereby the tightness of the packing is increased. The ring 10 is of a U-shaped crosS section.

Figs. 5 and 6 show a further embodiment of the invention with a collectin trough 4: disposed right above the rail 12. Tn this case the collecting trough not only communicates with the oil box 1 around the cranks and the connecting rods 3, but also with the casing 14 (Fig. 6), which surrounds the remannng machine parts. In this case, too, there are two collecting troughs, one above each rail. 11 designates the suction pipe conveying the oil, from the collecting troughs.

. To convey the oil from these collecting troughs there is arranged a pump for each trough. Fig. 5 shows these pumps connected to the same shaft 16 as the force oil pumps. The pumps are arranged in the pump casing 15. The shaft 16 receives its motion for instance from a shaft in the gearing 17. The suction pumps draw up the oil from the collecting troughs 4 and convey it through the the trough.

What I claim as new and desiregto secure by Letters Patent of the United States is 1. The combination with a locomotive having a number of movable parts and wheels, of a plurality of collecting troughs arranged in close proximity to the wheels and disposed above the rails on which the wheels travel, casings surrounding the movable parts, means for gathering lubricant from the casings and for conveying the same to said troughs, a plurality of independent suction pumps arranged to gather the lubricant deposited in said troughs, and receptacles situated above said casings and connect-' ed to the discharge members of the pumps for receiving the lubricant gathered from 2. A combination as defined in claim 1 in which certain of the movable parts include cranks and coupling rods and in which one of the casings surrounds said cranks and coupling rods and has a wall against which the lubricant is thrown by said cranks and .coupling rods for the purpose of cooling the lubricant.

3. A combination as defined in claim 1 in which one of the movable'parts is mounted in a bearing, and a sliding disk carried by .sald bearing and slldably engaging one of sa1d casings.

In testimony whereof I affix my signature in presence of two witnesses.

FREDRIK LJUNGSTROM.

.Witnesses 7 F. H. BUGROTH,

OSCAR GRAHN. I, 

